728849 has 8 divisors (see below), whose sum is σ = 801792. Its totient is φ = 657040.

The previous prime is 728843. The next prime is 728851. The reversal of 728849 is 948827.

728849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1712 + ... + 2094.

It is an arithmetic number, because the mean of its divisors is an integer number (100224).

2⁷²⁸⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

728849 is a deficient number, since it is larger than the sum of its proper divisors (72943).

728849 is a wasteful number, since it uses less digits than its factorization.

728849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567.

The product of its digits is 32256, while the sum is 38.

The square root of 728849 is about 853.7265370129. The cubic root of 728849 is about 89.9937855791.

It can be divided in two parts, 7288 and 49, that added together give a palindrome (7337).

The spelling of 728849 in words is "seven hundred twenty-eight thousand, eight hundred forty-nine".